Reactor key electric valve motor low-voltage ride-through control method and controller

A low-voltage ride-through, electric valve technology, applied in motor generator control, electronic commutation motor control, control of electromechanical brakes, etc., can solve the problem of valve motor running speed drop, valve switching valve action time prolongation, reactor safety decline, etc. question

Inactive Publication Date: 2019-12-20
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology

At this time, the power grid is prone to short-term power supply voltage fluctuations. This kind of power supply voltage fluctuations, especially the sudden drop in voltage, will cause a large drop in the operating speed of the valve motor, prolong the valve opening and closing time, and reduce the safety of the reactor. decline

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  • Reactor key electric valve motor low-voltage ride-through control method and controller
  • Reactor key electric valve motor low-voltage ride-through control method and controller
  • Reactor key electric valve motor low-voltage ride-through control method and controller

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[0034] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the condition of not conflicting with each other, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0035] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from the scope of this description. Therefore, the protection scope of the present invention is not limited by the following disclosure. limitations of specific examples.

[0036] The technical problem to be solved by the present invention is to provide a brand-new low-voltage ride-through control method and controller for valve mot...

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Abstract

The invention discloses a reactor key electric valve motor low-voltage ride-through control method and a controller applied to low-voltage ride-through of a reactor key valve motor. For problems thatthe valve opening and closing actions of a traditional reactor valve control mode become slow under the condition that power grid voltage drops and the safety requirement of a system cannot be met, the invention proposes a valve motor low-voltage ride-through method adopting voltage closed-loop feedback weak magnetic compensation and the controller, theoretical analysis and experiments show that the control mode of the invention has obvious advantages compared with a traditional valve motor control mode, the rotating speed of the valve motor can be stabilized under the condition of voltage drop, and the low-voltage ride-through of the reactor key valve motor is achieved.

Description

technical field [0001] The invention relates to the field of control of a key electric valve motor of a reactor, in particular to a low-voltage ride-through control method and a controller of a key electric valve motor of a reactor. Background technique [0002] The traditional valve motor adopts the method of full pressure direct start and operation, and the operation mode can often meet the design requirements for the switching valve speed under ideal working conditions. But the reactor power supply system is a special system, especially the key safety-related valves often need to be operated in an emergency state. In this state, the entire reactor power supply system is in an island operation state. At this time, the power grid is prone to short-term power supply voltage fluctuations. This kind of power supply voltage fluctuations, especially the sudden drop in voltage, will cause a large drop in the operating speed of the valve motor, prolong the valve opening and closin...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P21/34H02P21/24
CPCH02P21/0089H02P21/24H02P21/34
Inventor 张斯其余峰胡忠平阴自阳胡俊肖腊梅
Owner NUCLEAR POWER INSTITUTE OF CHINA
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